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1. |
Solve 18 + a = 36. |
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A. |
54 |
B. |
18 |
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C. |
-2 |
D. |
-18 |
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Hint |
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2. |
Find C + D if C = [14 8 -1] and D = [-10 8 15]. |
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A. |
[4 16 14] |
B. |
[4 0 -16] |
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C. |
[24 0 -16] |
D. |
[24 16 14] |
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Hint |
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3. |
Determine which matrix has a determinant. |
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A. |
 |
B. |
[1 -4 -8] |
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C. |
 |
D. |
 |
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Hint |
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4. |
Express 45,280,000 in scientific notation. |
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A. |
4.528 × 106 |
B. |
4.528 × 10-7 |
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C. |
4.528 × 107 |
D. |
45.28 × 106 |
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Hint |
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5. |
Simplify  |
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A. |
27 |
B. |
 |
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C. |
9 |
D. |
3 |
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Hint |
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6. |
What is the conjugate of 12 - 4i? |
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A. |
12 |
B. |
 |
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C. |
12 + 4i |
D. |
-4i |
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Hint |
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7. |
Find the standard form of the equation 3x2 + 2y2 + 42x - 8y + 149 = 0. |
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A. |
 |
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B. |
 |
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C. |
 |
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D. |
 |
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Hint |
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8. |
Which function has a graph that opens upward? |
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A. |
f(x) = -5x2 -6x -3 |
B. |
f(x) = -x2 + 4x + 7 |
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C. |
f(x) = -x2 + 3x -12 |
D. |
f(x) = 2x2 - 5x - 2 |
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Hint |
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9. |
Find the standard deviation of the data in the stem-and-leaf plot to the nearest hundredth. |
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 |
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A. |
10.72 |
B. |
217.00 |
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C. |
228.50 |
D. |
11.74 |
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Hint |
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10. |
Simplify  . |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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11. |
Radioactivity The half-life of uranium-232 is 72 years. Find the approximate value of k in the formula y = nekt for uranium-232. Assume t is in years. |
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A. |
0.0012 |
B. |
-0.0024 |
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C. |
-0.0048 |
D. |
-0.0096 |
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Hint |
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12. |
Evaluate  |
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A. |
 |
B. |
 |
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C. |
4,032 |
D. |
 |
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Hint |
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13. |
Solve  |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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14. |
If a = 2 and the vertex is (3, -4), will there be a minimum or maximum value for the parabola? What is the value? |
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A. |
maximum, –4 |
B. |
minimum, –4 |
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C. |
maximum, –3 |
D. |
maximum, 3 |
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Hint |
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15. |
Find the value for the discriminant for the following equation:  . Then describe the number and type of roots. |
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A. |
The discriminant is 100, which is not a perfect square; therefore, there are two irrational roots |
B. |
The discriminant is 100, which is a perfect square; therefore, there are two rational roots |
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C. |
The discriminant is negative, so there are two complex roots. |
D. |
The discriminant is 96, which is not a perfect square; therefore, there are two irrational roots. |
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Hint |
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16. |
Which of the following functions will have the widest graph? |
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A. |
y = –2x2 + 5x – 1 |
B. |
y =  x2 +3x + 1 |
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C. |
y = 3x2 – 8 |
D. |
y =  x2 + x – 3 |
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Hint |
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17. |
Given that  and  , what value would not be in the domain of  ? |
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A. |
 |
B. |
3 |
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C. |
0 |
D. |
 |
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Hint |
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18. |
Which point is the closest to (-2, 1)? |
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A. |
(-1, 4) |
B. |
(-2, 5) |
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C. |
(-4, -1) |
D. |
(-5, 2) |
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Hint |
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19. |
Suppose two dice are rolled. What is the probability of rolling doubles? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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20. |
Which of the graphs will have the lowest standard deviation? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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